.videoBox {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  .videoLi {
    width: 310px;
    margin-top: 15px;
    .videoBox {
      display: flex;
      justify-content: center;
      width: 100%;
      height: 240px;
    }
  }
}
